TAMANNA KUMARI, LAKHVINDER SINGH* AND PALLAVI PUNIA
Department of Environmental Science & Engineering, Guru Jambheshwar University of Science & Technology,
Hisar-125 001 (Haryana), India
*(e-mail: lakhvinder16@gmail.com; Mobile: 94668 85605)
(Received: August 9, 2025; Accepted: September 17, 2025)
ABSTRACT
Rice husk, a promising agriculture-based biosorbent, was used for the removal of Acid Red 66 dye in the present study. Alkali-treated rice husk was used to adsorb said dye from simulated aquatic solution. SEM and FTIR were used to evaluate the chemical makeup of rice husk which showed positive changes in chemical composition of alkali-treated rice husk. The primary components of the materials under analysis were lignin, cellulose and hemicellulose. Standard commutative models for the response surfaces and percentage adsorption were obtained by evaluating the adsorbents by applying Box-Behnken designs with independent variables which included pH, concentration of dye and different adsorbent dose. Rice husk showed a very high percentage of adsorption of Acid Red 66 dye (95.45%). Regeneration study showed reusability and future prospective of alkali-treated rice husk for the treatment of dye containing waste waters.
Key words: Agricultural waste, rice husk, adsorption, Acid Red 66, SEM